Follow these steps:
- Download the .jar version of Minecraft from the website
- Force update Minecraft on your Windows Machine and login
- Press
Ctrl+r and type %appdata% and copy your .minecraft folder
- Put it on a USB and insert the USB into your Linux Machine
- Copy the
.minecraft folder to ~/.minecraft in your Linux machine
- Login as usual and click
"Play Offline"
You will have the following Issues:
- Generally Linux doesn't have java per-installed and you will need Internet connection
- You cannot play online
You should just get a Ethernet cable and tether internet off of your windows machine. Or do as uncovery said and get cheap network cards connect them.
There doesn't seem to be any official way. Then again, modding the game by splaying open and modifying the internals of the .jar file was never really officially supported, either. The new launcher is, ultimately, part of a rather large series of changes to Minecraft, including making mods actually something the game supports via the new Resource Pack stuff, but until that time, modding is a bit more awkward.
However, there's still a way to do it. Go into the versions folder inside .minecraft, and copy the version you want to mod. Rename the copied folder, and both the files inside, to some new name, say "modded 1.blah". Lastly, open the .json file in a text editor, and change the line that will read something like "id": "1.6.1", so that the ID matches the new name. The new launcher should now show a version "modded 1.blah" in the list, but since that version doesn't exist on the Minecraft servers, it won't get overwritten. Splay open and tinker with the .jar file in there the same way you always would with the old launcher.
Note:
If you are using the new launcher with an older version of Minecraft, then the mods you are using may attempt to access files in the bin folder directly. If this is the case, you can simply create a folder named 'bin' in the .minecraft folder where they are looking for it, and add the files the mod needs in there. The mod should find the files, and carry on as it used to, not knowing the difference.
Best Answer
NOTE: This is a workaround, not an official way to do it.
I've noticed that on modded minecraft versions, the launcher just basically shrugs and skips the library checks. Here's how to make a version a "modded" version without it actually being modded.
%APPDATA%\roaming\.minecraft. You can get to it by opening Run and then typing in%APPDATA%\roaming\.minecraftand then pressing enter. If you're using iOS, I think it's underLibrary/Application Data/minecraft. If you're using a Unix-based operating system, it's under~/.minecraft/.I believe this works because of some lines I saw in my Minecraft logs:
[11:54:21 INFO]: Finished downloading /home/noel/.minecraft/libraries/tv/twitch/twitch/5.16/twitch-5.16.jarfor job 'Version & Libraries': Local file matches local checksum, using that I think that Minecraft just uses the local files if they match their local checksum. That and the ID thing mentioned in step 5.